Oil indicator wiper



July 14, 1931. w 5 BURKHARDT I 1,814,075

OIL INDICATOR WIPER Filed June l, 19:50

WIiII);IIII I] 7/ nndel/ I. Barth/d2? I I Patented July 14, 1931 WENDELLE. BURKHARD-T, or CRAWFORDSVILLE, INDIANA OIL INDICATOR WIPERApplication filed June 16,

This invention aims to provide a novel and eflicient means for wipingsurplus oil oflt' gage With the above and other objects in view,

which will appear as the description proceeds, the invention resides inthe combination and arrangement of parts and in the details ofconstruction, hereinafter. described and claimed, it being understoodthat changes may be made in the precise embodiment of the inventionherein disclosed, within the scope of what is claimed, without departingfrom the spirit of the invention.

In the accompanying drawings Figure 1 is an elevation, Figure 2 a longitudinal section, and Figure 3 a section on the line 33 of Figure 2.

The numerallmarks a reservoir, such as the crank case of an internalcombustion en ine of the kind used on an automobile. A tu 2 is threadedat 3, or secured otherwise, in the reservoir 1. A closure plug 4 fitsremovably in the upper end of the tube 2 and has a flange -5 whichengages the upper end of the tube, to limit the downward movement of theplug.

A' gage rod 6 is secured intermediate its endsin the plug 4. At itsupper end, the gage rod 6 has a handle 7. The gage rod 6 extends downinto the reservoir 1. A friction spring 8 is mounted on the plug 4 andaids in holding the plug securely but releasably in the upper end of thetube 2. The invention be used in connection with closure plugs ma 4 dierent from the one shown in the drawo in Fhe tube 2 has a lateral branch9 disposed at right angles to the body of the tube. The

branch 9 has oppositely disposed internal longitudinal guide ribs .10. Acap 11 is 5 mounted on the outer end of the branch 9, by

threading or otherwise. The cap 11 has an opening 12.

In'the'opening 12 of the cap 11, a stem 14 is mounted to slide. The stem14 carries a push button 15 on its outer end. A weak to the inclinedsurface 20 of the slide 17, the

1930. Serial No. 461,469.

compression spring 16-surrounds the stem 14. One end of the spring 16abutsa ainst the button 15, and the other end of tie spring abutsagainst the cap 11. A slide 17 is threaded on the inner end of the stem14. The slide 17 has external longitudinal grooves 18 receiving theguide ribs 10 of the' branch 9. The slide 14" has an upper inclinedsurface 19, and an inclined lower surface 20.. A flexible wiper 21 issecured by a plate 22 and attaching elements 23 to the inclined part 20of the slide 17. The upper portion of the flexible wiper 21 is spacedfrom the inclined surface 19 to form a free tongue31. A guide 24 isattached by securing elements 25 in the tube 2 and is disposed oppositeto the slide 17 The guide 24 has an inclined upper surface 26 and alower inclined sur face 27 defining a scraping edge 28.

lVhen the slide 17 is shoved inwardly by means of the button 15, thespring 16 is compressed, and the tongue 31 at the upper end of the wiper21 engages the rod 6 and wipes the oil oil the rod as the rod is removedfrom the tube 2, it being a matter of common knowledge that the rod mustbe wiped off, before an observation is made as to the amount of oil inthe crank case or reservoir 1. The device, obviously, rendersunnecessary, the spattering of oil when the rod 6 is reinm'ed, and it isunnecessary to use rags and the like for wiping off the rod 6 before therod is reinserted to ascertain the level of the oil in the reservoir orcrank case 1. The rod 6 slids in contact with the scraping edge 28 ofthe guide 24, The guide 24 prevents the rod from being flexed when theslide 17 is pushed inwardly to' bring the tongue 31 of the wiper 21against the rod.

The inclined surface 26 of the-guide 24 di-. rects the rod 6 toward thecenter of the tube 2 when the rod is inserted into the tube. The

oil is removed primarily by the tongue 31 of the wiper 21, but thescraping edge 28' of the guide 24 aids, also, in removing the oil. Owingto the fact that the-slide 7 has the inclined surface 19, the tongue 31'is left free and flerlible. I Because the wiper 21 is secured wiper isgiven such an inclination that it tends to direct the oil back into thereservoir'l when the rod 6 is withdrawn from contact with the tongue 31of the wiper 21. The wiper 21 may be made of any desired material, suchas reasonably stiff leather, the leather, however, having sufiicientflexibility so that the tongue portion 31 of it will conform to aconsiderable extent to the cross sectional contour of the rod 6 andclear the rod 10 from oil when the rod is withdrawnl The guide ribs 10and the grooves 18 of Figure 3 cause the slide 17 to move inwardly andoutwardly in a straight line, without turning on an axis, and,consequently, the

tongue 31 of the flexible wiper 21 is always presented properly withrespect to the gage rod 6.

One of the outstanding features of the device forming the subject matterof this application is that it is constructed in such a way that it isconstructed in such a way that it keeps the crank case as free from dustand dirt asdo present car constructions. In wipers, as at presentconstructed, parts are ex- 25 posed to dust and grit in the air, andwhen the rod is used, it IS certain to become covered more or less withdirt, which is carried into the oiling system of the car.

-Having thus described the invention, what 3 is claimed is: i

1. In a device'of the class described, a tube, a gage removably mountedin the tube, and a wiper slidable in the tube into and out ofengageme'ntwith .the gage.

2. In a device ofthe class described, a tube,

' a gage removably mounted in the tube, a wiper slidable in the tubeinto and out of engagement with the gage, and spring means forretracting the wiper.

40 3. In a device of the class described, a tube,

a guide in the tube, a gage removably mounted in the tube and engagedwith the guide, and a wiper slidable in the tube into and out ofengagement with the gage.

5 4.. In a device of the class described, a tube, a guide in the tubeand having a scraping. edge, a gage insertable into the tube. andbearingagainst the guide, and a wiper sl1d able in the tube into and outofengagement 4 with ,the gage. v

5. In a device of the class described, a tube,

a gage removably mounted in the tube, a slide mounted for reciprocationin the tube, means for guiding the slide for straight line recip-.

rocation, and a wiper on the slide andprovided with a ton e adapted toen age the ga e when the sli e is moved inward y. n testimony that Iclaim the foregoing as my own, I have hereto afiixed my signature.

WENDELL E. BURKHARDT.

